Question

The table below shows the size distribution for American households in 1970 and 2010

Suppose you were to choose one household at random from the 1970 population.
a. Show the probability distribution for the random variable “number of people in the household.” To simplify, let the maximum value for the random variable be 7. Show the bar chart for the distribution and compute the expected value of the random variable.
b. Repeat part a, but this time assume you are selecting one household from the 2010 population.